550521144020 has 24 divisors (see below), whose sum is σ = 1156203943944. Its totient is φ = 220187592576.

The previous prime is 550521143993. The next prime is 550521144049. The reversal of 550521144020 is 20441125055.

It can be written as a sum of positive squares in 4 ways, for example, as 67910275216 + 482610868804 = 260596^2 + 694702^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1086827 + ... + 1510706.

It is an arithmetic number, because the mean of its divisors is an integer number (48175164331).

Almost surely, 2^550521144020 is an apocalyptic number.

It is an amenable number.

550521144020 is an abundant number, since it is smaller than the sum of its proper divisors (605682799924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

550521144020 is a wasteful number, since it uses less digits than its factorization.

550521144020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2608139 (or 2608137 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 29.

Adding to 550521144020 its reverse (20441125055), we get a palindrome (570962269075).

The spelling of 550521144020 in words is "five hundred fifty billion, five hundred twenty-one million, one hundred forty-four thousand, twenty".